• Can multitrophic interactions and ocean warming influence large-scale kelp recovery? 

      Christie, Hartvig C; Gundersen, Hege; Rinde, Eli; Filbee-Dexter, Karen; Norderhaug, Kjell Magnus; Pedersen, Torstein; Bekkby, Trine; Gitmark, Janne Kim; Fagerli, Camilla With (Journal article; Peer reviewed, 2019)
      Ongoing changes along the northeastern Atlantic coastline provide an opportunity to explore the influence of climate change and multitrophic interactions on the recovery of kelp. Here, vast areas of sea urchin‐dominated ...
    • Can sea urchin grazing of kelp forests in the arctic make rocky shore systems more vulnerable to oil spills? 

      Christie, Hartvig C; Bekkby, Trine; Norderhaug, Kjell Magnus; Beyer, Jonny; Jørgensen, Nina Mari (Peer reviewed; Journal article, 2019)
      In Arctic Norway, the risk of major marine oil spills associated with increasing offshore drilling, land terminal, and maritime transport activities is a cause for concern. Intertidal and subtidal kelp and seaweed communities ...
    • Efficient coralline algal psbA mini barcoding and High Resolution Melt HRM) analysis using a simple custom DNA preparation 

      Anglès d'Auriac, Marc; Le Gall, Line; Peña, Viviana; Hall-Spencer, Jason M.; Steneck, Robert S.; Fredriksen, Stein; Gitmark, Janne Kim; Christie, Hartvig C; Husa, Vivian; Grefsrud, Ellen Sofie; Rinde, Eli (Peer reviewed; Journal article, 2019)
      Coralline algae form extensive maerl and rhodolith habitats that support a rich biodiversity. Calcium carbonate harvesting as well as trawling activities threatens this ecosystem. Eleven species were recorded so far as ...
    • Efficient coralline algal psbA mini barcoding and High Resolution Melt HRM) analysis using a simple custom DNA preparation 

      Anglès d'Auriac, Marc; Le Gall, Line; Peña, Viviana; Hall-Spencer, Jason M.; Steneck, Robert S.; Fredriksen, Stein; Gitmark, Janne Kim; Christie, Hartvig C; Husa, Vivian; Grefsrud, Ellen Sofie; Rinde, Eli (Journal article; Peer reviewed, 2019)
      Coralline algae form extensive maerl and rhodolith habitats that support a rich biodiversity. Calcium carbonate harvesting as well as trawling activities threatens this ecosystem. Eleven species were recorded so far as ...
    • Genetic heterogeneity of two bioeconomically important kelp species along the Norwegian coast 

      Evankow, Ann; Christie, Hartvig C; Hancke, Kasper; Brysting, Anne Krag; Junge, Claudia; Fredriksen, Stein; Thaulow, Jens (Journal article; Peer reviewed, 2019)
      Knowledge of genetic diversity among wild populations is becoming increasingly important as more species are recognized for their bioeconomic value. Industrialization of natural resources, such as kelp in the marine shallow ...
    • In a squeeze: Epibiosis may affect the distribution of kelp forests 

      Andersen, Guri Sogn; Christie, Hartvig C; Moy, Frithjof Emil (Journal article; Peer reviewed, 2019)
      The processes limiting the population recovery of the kelp Saccharina latissima after recent large‐scale loss from the south coast of Norway are poorly understood. Previous investigations do, however, suggest that the ...
    • Predation mortality from ambush and cruising predators on newly-settled 0-group gadoids 

      Pedersen, Torstein; Strand, Hans Kristian; Christie, Hartvig C; Moy, Frithjof (Peer reviewed; Journal article, 2020)
      We investigated predation from an ambush predator (shorthorn sculpin) and two cruising predators (Atlantic cod and saithe) on bottom-settled 0-group cod and saithe juveniles in a fjord in northern Norway. Stomach contents ...
    • Synergism between cruising cod and ambush sculpin predators on 0-group gadoids is modified by daylight cycle and presence of aggressive wolffish 

      Strand, Hans Kristian; Pedersen, Torstein; Christie, Hartvig C; Moy, Frithjof Emil (Peer reviewed; Journal article, 2020)
      Shorthorn sculpin (Myoxocephalus scorpius) and large cod (300–400 g body weight) are important predators on newly settled 0-group cod (Gadus morhua) and saithe (Pollachius virens) in Porsangerfjorden in northern Norway. ...
    • Tallknusing av sukkertaredata 

      Gundersen, Hege; Norderhaug, Kjell Magnus; Christie, Hartvig C; Moy, Frithjof Emil; Hjermann, Dag Øystein; Vedal, Jens; Ledang, Anna Birgitta; Gitmark, Janne Kim; Walday, Mats (Research report, 2014)
      Norsk institutt for vannforskning (NIVA) og Havforskningsinstituttet (HI) har gjennomført prosjektet «Tallknusing av sukkertare-data», på oppdrag fra Miljødirektoratet. Gjennom prosjektet har tilgjengelige data som kan ...
    • The abundance of kelp is modified by the combined impact of depth, waves and currents 

      Bekkby, Trine; Smit, Cecilie; Gundersen, Hege; Rinde, Eli; Steen, Henning; Tveiten, Lise Ann; Gitmark, Janne Kim; Fredriksen, Stein; Albretsen, Jon; Christie, Hartvig C (Journal article; Peer reviewed, 2019)
      This study analyses the combined impact of two types of ocean water flow, wave exposure and ocean currents, on kelp Laminaria hyperborea abundance, taking other environmental co-variables into account. The dataset covers ...